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RI Park, VV Chan, TM Topping, RM Rose, JS Heier; Human Eye Simulation: Analysis of retinal stresses during saccadic eye movement . Invest. Ophthalmol. Vis. Sci. 2002;43(13):2559.
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© ARVO (1962-2015); The Authors (2016-present)
Purpose: (1) To introduce the technique of human eye simulation, a dynamic finite element model of the human eye, and (2) to determine the magnitude and distribution of retinal stresses generated during lateral saccadic eye movement. Methods: Human eye simulation was performed by creating a 3-dimensional finite element model of the human eye; structures modeled included cornea, sclera, iris, ciliary body, lens, zonules, vitreous, retina, choroid, and optic nerve. Lateral saccadic eye movement was modeled by accelerating the globe from 0-125-0 rpm over a total time of 75 msec, resulting in a 30 degree saccadic eye movement. The magnitude and duration of retinal stresses were calculated and mapped. Results: During lateral saccadic eye movement, the peak stresses were generated in the superotemporal retina and were ∼22 mPa in magnitude. There was relative sparing of the optic nerve, macula and posterior retina. Conclusion: Human eye simulation through dynamic finite element modeling provides a powerful new tool for evaluating ocular structures. The stresses generated in the retina during lateral saccadic eye movement are greatest in the supero-temporal retina with sparing of the optic nerve and posterior pole. View OriginalDownload SlideView OriginalDownload Slide
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